JPH0543183A - Inspection device for escalator safety device - Google Patents

Abstract

PURPOSE:To carry out an inspection work for confirming the operation of a safety device in short time by making a rear wheel diameter at any step among many steps smaller than that at the other step. CONSTITUTION:A rear wheel at any step is replaced with a small diameter rear wheel 2a prepared for inspection. When a key switch for starting an escalator is turned on, the escalator is operated. Since the rear wheel is small in diameter, the rear wheel shaft 5, the moving locus of which is lowered, and a touch sense 4 are made in contact with each other to operate a safety device 3, turning off a switch and de-energizing a relay. Then the escalator is stopped. Thus, since the switch turned off by the operation signal from the safety device is of self-returning type, the escalator on which peeling off of a rear wheel tire is actually produced cannot be reset automatically when it is stopped, and the safety of the escalator is assured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection device for an escalator safety device, and more particularly to an inspection device for an escalator safety device suitable for inspecting a safety device for detecting a rear wheel abnormality such as tire separation of a step rear wheel of an escalator. Regarding

[0002]

2. Description of the Related Art FIG. 3 is an explanatory view of a main part showing a relationship between a rear wheel of an escalator step and a safety device. In the figure, 1 is a guide rail, 2 is a rear wheel rolling on the guide rail 1, and 3 is a guide rail inclination. Safety device mounted near the section, 4 is a tactile sense for operating the safety device 3, 5 is a shaft of the rear wheel 2, 6 is a shaft 5
Is the movement trajectory of. The rear wheel 2 has a tire made of a polymer material wound around a metal wheel, but the tire or the adhesive may deteriorate with age and may be separated from the metal part. Now
When the tire separation occurs on the rear wheel 2 of any step, the movement locus 6 of the shaft 5 is lowered, the shaft 5 and the tactile sensation 4 come into contact with each other, and the safety device operates to stop the escalator. When inspecting this safety device, do 2-3 steps.
While removing the sheets, the left and right skirt guards are removed, and the operator A signals that the tactile sensation 4 is tilted by hand, and it is confirmed that the escalator does not start even when the operator B turns on the start switch. After carrying out this work on the left and right safety devices, the left and right skirt guards and steps are attached again and the work is completed.

A reference example of this safety device is Japanese Utility Model Laid-Open No. 62-71177.

[0004]

Since the above-mentioned conventional safety device has been inspected as described above, the skirt guards standing on both sides of each step of inspection are removed and several steps are also removed. Must be removed,
Since it had to be assembled in the reverse order after the inspection, it took a long time. In particular, many escalators are often installed in the same place, and since it is necessary to perform inspections within a limited time such as regular holidays, there is a strong demand for inspection work in a short time. is there.

The present invention solves the above problems, and an object of the present invention is to provide an inspection device for an escalator safety device capable of performing an inspection work for confirming the operation of the safety device in a short time. is there.

[0006]

In order to achieve the above object, the present invention is supported by front wheels and rear wheels rolling on a guide rail, and a plurality of endlessly connected and rotating steps, and the guide rail. In the inspection device of the escalator safety device, which is incorporated in the vicinity of the inclined portion of the escalator and stops the escalator by contacting the step portion when the rear wheel diameter of the step decreases, any step among the many steps The diameter of the rear wheel is smaller than the diameter of the rear wheel in the other steps.

[0007]

Since the present invention has the above-described structure, when inspecting the safety device, the escalator can be operated by exchanging the rear wheel of any step with a small diameter wheel prepared.
It is not necessary to remove or reassemble the skirt guard as in the conventional case, and the inspection work can be performed in an extremely short time.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is an explanatory view of a safety device operation state, FIG.
Is a circuit diagram. In the figure, 2a is a small-diameter rear wheel that has been replaced for inspection, 7 is a return spring, 8 is a key switch, 9 is a safety device other than this safety device, 10 is a relay, Ra ₁ and R ₁ .
a ₂ is an a contact of the relay R, 11 is a main motor control circuit, K
Is a switch which is turned off by an operation signal of the safety device 3 and manually restored. The other symbols indicate the same parts as in FIG.

That is, in the inspection work, first, the rear wheel 2 at an arbitrary step is replaced with a small-diameter rear wheel 2a prepared for inspection. When the key switch 8 is turned on to activate the escalator, (+)-8-K-9-10-(-) is closed and Ra ₁ and Ra ₂ are closed (+)-Ra ₁ -K-9-10. −
The (-) circuit is self-held and (+)-Ra
_The escalator is operated by closing 2-11-(-). Because of the small diameter rear wheel, the rear wheel shaft 5 whose moving path is lowered and the tactile sensation 4 come into contact with each other and the safety device 3 operates, whereby the switch K is turned off and the relay 10 is demagnetized. As a result R
a ₁ and Ra ₂ open and the escalator stops. This completes the confirmation of the operation of the safety device. Since the escalator moves about 0.5 m before stopping, the tactile sensation 4 is returned to the state before the operation by the return spring 7. Therefore, if the switch K is manually returned after the small diameter rear wheel is replaced with the normal rear wheel, the escalator can be operated by turning on the key switch 8. Checking the left and right ends the inspection work. The tactile sensation 4 is not limited to the rear wheel shaft and may be brought into contact with any part of the step displaced low.

According to this embodiment, since the switch that is turned off by the operation signal of the safety device is of the manual reset type, when the escalator where the rear wheel tire peeling actually occurs, the escalator cannot be automatically restored so that safety is guaranteed.

[0011]

According to the present invention, since the safety device is constructed as described above, when inspecting the safety device, it is sufficient to replace the rear wheel of any step with a prepared small diameter one and operate the escalator. There is no need to remove or reassemble the scard guard as in the past, and inspection work can be performed in an extremely short time.

[Brief description of drawings]

FIG. 1 is an operation state explanatory view showing an embodiment of a safety device of the present invention.

FIG. 2 is a circuit diagram.

FIG. 3 is a side view showing a conventional example.

[Explanation of symbols]

 1 Guide Rail 2 Rear Wheel 2a Small Diameter Rear Wheel 3 Safety Device 4 Tactile 5 Rear Wheel Axis 6 Rear Wheel Axis Trajectory 7 Return Spring K Manual Return Switch

Claims (1)

[Claims] 1. A step of being supported by front wheels and rear wheels rolling on a guide rail, being connected endlessly in a multiplicity of rounds, and being installed in the vicinity of an inclined portion of the guide rail,
In the inspection device of the escalator safety device, which is configured to stop the escalator by contacting the step portion when the rear wheel diameter of the step is decreased, the diameter of the rear wheel of any step among the many steps is changed to another value. Inspection device for escalator safety device, characterized by being smaller than the diameter of the rear wheel of the step.